With a political win in Turkey, victories over Islamic State and autonomy in Iraqi Kurdistan, the Kurds are enjoying a triumphant moment—and thinking of a country of their own

It is a time of good news for the Kurds, a people more accustomed to tragedy than to triumph.

Just last week in Turkey, a political party rooted in the struggle for Kurdish rights vaulted over the 10% threshold for parliamentary representation, giving the Kurds their biggest say ever in Turkish politics. Days later, allied Kurdish fighters in Syria seized a crucial border crossing from Islamic State, thus uniting Kurdish areas that...